Metallic fastener



2 Sheets-Sheet 1.

(No Model.)

G. W. MGGILL.

METALLIC FASTBNER.

No. 337,969. Patented Mam. 16, 1886.

ITIVESSES N. PETERS, Hwwbmogmpher, washington D. c.

(No Model.) 2 Sheets-Sheet 2.

G. W. MoGILL.

METALLIC IASTBllEIR.A

No. 337,969. Patented Mar. 16, 1886.

Ely. 7.

N4 PETERS, Phcwutmgmplwr, wmhmmun, D. C.

` UNITED STATES PATENT EEICE.

GEORGE XV. MCGILL, OF RIVERDALE, NEV YORK.

METALLIC FASTENER.

SPECIFICATION forming part of Letters Patent No.337,969, dated March 16,1886.

Application filed January 15, 1886. Serial No. 198,630.

To all whom it may concern:

Beit known that'I, GEORGE EV. MCGILL, a citizen of the United States,residing at Riverdale, in the city and county of New York, State of NewYork, have invented a new and Improved Metallic Fastener, of which thefollowing is a specification, reference being had to the accompanyingdrawings, making part of the same, and to the figures and letters ofreference marked thereon, in which similar letters and figures ofreference indicate corresponding parts.

My invention consists in a fastener made of a single piece of sheetmetal,of greater length than width, shaped or fashioned to have a plateor disk at each end struck concavo-con vex and connected together by aneck, one or both plates having a penetrating-prong extending from it.

In the accompanying drawings the device is represented embodied in threedifferent forms, to wit: in the form of a pairof scallop- Shellsconnected together by a neck integral therewith,as shown in Figures l toS,inclusive; a scallop-shell and coneavoconvex plate, similarlyconnected, as shown in Figs. 9 and 10, and as two concave convex platessimilarly connected, as shown in Figs. ll, 12, and 13. Fig. l shows theblank from which the device is fashioned, struck up in scallop-shellform, l 2A being the shells or plates, 3 their connecting-neck, and 4the penetrating-prong ofthe device. Fig. 2 represents the blank sofashioned folded overon a line running across the center of the neck 3,with the concave surface of both plates or shells facing each other.Fig. 8 is a perspective view of Fig. 2, with the prong 4 bent out at anangle from the plate or shell with which it is connected, andboth'plates or shells facing each other at an angle. Fig. 4 represents aplan View of the fastener as applied in binding together several sheetsof paper. Figs. 5 and 6 represent vertical sectional views of Fig. 4,taken on aline x :v of that figure, Fig. 5 representing the position ofthe penetrating-prong 4 and covering plate or shell before being foldeddown on the opposite side of the papers, and Fig. 6 after being foldeddown. Fig.7 is a view similar to Fig 3, excepting that in Fig. 7 theprong 4 is shown folded in from the periphery of the plate or shell toform a shoulder, Z), extending into the hollow of the same, and is thenbrought out at aright angle (No model.)

from the concave surface of the shell or plate on a line within theperiphery of the same. Fig. 8 is a View similar to Fig. 6, showing theprong 4 fashioned as shown in Fig. 7. Fig. 9 is a view similar to Fig.7, excepting that the plate lis given a dish form instead of ashellform, and the prong 4, instead of being folded back into the hollowofthe plate before being brought out at a right angle from the same, iscut to extend through the edge of the plate and is bent out at an angledirectly from the concave surface of the plate and on a line within itsborder or periphery. Fig. l0 is a view similar to Fig. 9, excepting thatin Fig. 10 the prong 4 is represented fashioned wholly from the bodypart of the plate l, being cut as a tongue therein and ter- Ininatingwithin the struck edge of the plate, and projecting'out at right anglestherefrom. Fig. l1 represents a modification in the struck-up blank ofthe device, wherein both plates are provided with a penetrating-prong.Fig. 12 is a vertical sectional view of the fastener fashioned from themodified blank shown in Fig. 1l, and 'applied in binding papers. Fig. 13is a perspective view of the fastener so fashioned, and Fig. 14 is across-section of the prong 4, taken on the line y yof Fig. 11.

rEhe device proper is operated as follows: The penetrating prong 4 isforced through the papers to be bound until the periphery of plate lrests on one side of the same at a distance from the margin to admit ofthe other plate, 2, being folded over on the other Side of such papers,as shown in Fig. 5. rlhe penetrating-prong4 is then folded down on theOpposite side of the papers and toward the neck or hinge 8, and theplate 2 folded down over it, as shown in vertical sectional Fig. 6,thereby covering the prong and presenting similar convex surfaces onboth sides of the papers, as shown in Fig. 4. Vhen the prong 4 isprojected directly from the edge of the plate to which it is attached,as in Figs. from l to 6, inclusive, it is preferable to have the freeplate 2 a little longer than the'prong plate l, as shown by dotted linesin Fig. 4, to admit of the plate 2 covering the whole of the folded partof the prong 4 and its point of penetration in the papers, to protectthe latter and to admit of the edge of the plate 2 resting directly onthe surface of one side of the papers, as does the edge of the otherplate on the opposite side of the same. This end IOO may be accomplishedby folding the neck 3 in manner to cause the front edge of thecovering-plate 2 to project beyond the pronged edge of the lower plate.I prefer, however, to make both plates l and 2 of the same size, asshown in Fig. 7, and to accomplish the end above stated by folding theprong 4 back into the hollow or concavity of its plate before bending itout at a right angle from the same, as shown v1n Ysaid figure. By thisarrangement of the prong it will penetrate and leave the papers beingbound at a point within the circumference of both of the plates 1 and 2,and admlt of it and its point of puncture being wholly covered by bothplates, as shown in the vertical sectional Fig. 8. The fastener thusmade, when applied, will present two conver surfaces rising from thepapers or other articles which it binds-one on eaehside-with thelr outeredge or periphery resting directly on the p aper and vcovering thefolded-over penetrating-prong and its'point of puncture in the papers.Asimilar end'may, in a measure, be accomplished by cutting the pronginto its plate through the edge of the latter, as shown 1n Fig. 9, orforming it wholly from the body part of the plate as a tongue, as shown1n Fig. 10, and projecting it at a right angle from its plate, as shownin both said last-named figures.

The modification in the construction of the fastener shown in Figs. 11,12, and 13 consists 1n providing both plates of the device w1thpenetrating-prongs. These prongs are cut integral with each plate and onparallel lines with each other, as shown in Fig. 11, and are folded backinto their respective plates and out at right angles therefrom, as shown1n Fig. 13. The papers or othei` articles to be fastened have va slitpunctured in them on a line parallel to their margin and at a properdistance therefrom, and of a length equal to the width of both prongs.Both prongs are inserted in this slit-one on opposite sides of thepapers-and on the plates 12 being pressed together the prongs are forcedthrough the papers, and on their points coniing 1n contact with theconcave faces of the plates they are deflected and forced down towardthe papers, as shown in the vertical sectional Fig. 12.

. The penetrating-prong 4 of the fastener, to increase itspenetrating-power, may be made semi-cylindrical throughout its length,asl

shown in Fig. 2, or struck with vertical ridges, as shown in Figs. 11,13, and 14; and the neck 3 of the device may be similarly fashioned toincrease its clamping-power, as shown at ain Figs. 1, 2, 11, and 13.

To cause the neck 3 to fold correctly on a line across its center, so asto bring the plates 1 2 to properly face each other, the neck may beweakened on that line by discontinuing one of the ridges c at the centerpoint, as, shown in Fig. l1, or by providing the neck with a cross-slotor cross bead or ridge at that point.

Wh at I claim as my invention, and desire to secure by LettersPatent,'is'

1. A metallic-fastener blank having a central part, 3, and plates 1 and2, struck cor-l respondingly concavo-convex,with a prong or prongs, 4,projecting from the outer edge of one or both such plates, substantiallyas set forth.

2. A metallic fastener having two concave.- convex clamping-plates,"1 2,a penetrating prong or prongs, 4, projecting from one-or both of saidplates, and a folded neck connecting such plates, as and for thepurposes described.

3. In a metallic fastener having two connected clamping-plates, 1 2, thepenetratingprong 4, one or more, folded back on its connecting-plate toform the shoulder b, then out from said plate on a line within theborder of the same, substantially as described.

4. In a metallic fastener having two concavo-convex clamping-plates, l2, connected 'together by an integral neck, 3, thepenetrating-prong 4,one or more, arranged to pro- V ject from within the borderv of itsconnecting,

plate and at an angle therefrom, substantially as and for the purposesdescribed.

5. In a metallic fastener, a base-plate, 1, provided with afastening-prong, 4, in co-mbination with a covering-plate, 2, struckconcavo-convex, and connected with and overlapping the base-plate bymeans of a folded connecting-neck, 3, made integral with both plates,the covering-plate adapted to receive in its concavity and cover theturned-down point of the applied prong, as described.

6( In a metallic fastener having a base IIO pronged plate and aconcavo-convex cover- I ing-plate connected together by an integralneck, the penetrating-prong 4, cut wholly or partly from the body of thebase-plate and bent up at an angle therefrom on alinewithin theouteredge or periphery of such plate, substantially as shown in Figs. 9 and10, for the purposes described.

7. A metallic fastener having two connected clamping-plates, 1 2, veachplate provided with a penetrating-prong,` 4, projecting from the outeredge of such plate on parallel lines with each other, as and for thepurposes herein set forth.

In testimony whereof I afilx my signature in

